Through Priceline I rented a car from October 20th-22nd at the Alamo Dulles International Airport location. On November 2nd and 6th I received letters from the Alamo Damage Recovery Unit with damage and loss claims with total charges of $776.40 for the car I rented. I returned the car in the same condition it left. I have the check-in receipt (external tour voucher) from the Alamo associate upon returning the car with no damage noted. I believe these to be fraudulent charges. How can you help me?